68N
28N
17N
7N
Correct answer is C
No explanation has been provided for this answer.
14 kms-1
13 kms-1
12 kms-1
11 kms-1
Correct answer is D
Velocity = \(\sqrt2gR\)
= 2 x 6400 x 100 x 10
= 11 km-1
What is the acceleration due to gravity 'g' on the moon, if g is 10-2 on the earth?
0. 10 ms-2
0.74ms-2
1.6ms-2
10.00ms-2
Correct answer is C
s = 10-2 on earth
g = 6 ms-2 on earth
Earth on moon = \(\frac{10}{6}\)
= 1.6ms-2
When a ball rolls on a smooth level ground, the motion of its center is
translational
oscillatory
random
rotational
Correct answer is A
A ball rolling along a smooth surface observes translational motion at the center while the rest of the body rotates round the center.
0.25 m
0.45 m
0.58 m
1.00 m
Correct answer is A
T = 2\(\pi\) \(\sqrt\frac{L}{g}\)
1 = 2 x 3.142\(\sqrt\frac{L}{10}\)
(since the pendulum pass its lowest point twice in a second, hence the frequency is 1 and period T= \(\frac{1}{F}\))
L= 0.25m